package zl.io;
import java.io.*;

public class Demo
{
	public static void main(String[] args) throws Exception
	{
		File file = new File("C:"+File.separator+"Demo.txt");
		OutputStream out = new FileOutputStream(file);
		for(int i = 0; i < 1024 * 1024; i++)
		{
			out.write(1);
		}
		out.close();
	}
}